Synthesis, Characterization and Evaluation of Some Pyranopyrazoles and Pyranopyrimidines Derivatives as Antioxidants for Lubricating Oils. Iraqi Journal of Science [Internet]. 2023 Dec. 8 [cited 2025 Mar. 31];55(1):1-11. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11919